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Liquid crystal display and manufacturing method for the same

a technology of liquid crystal display and manufacturing method, which is applied in non-linear optics, instruments, optics, etc., can solve the problems of limited bonding area measurement, ineffective mass production, etc., and achieve high resolution, without reducing the total bonding width

Active Publication Date: 2014-11-25
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention proposes a design for a bonding pad on a LCD panel and a flexible printed circuit (FPC). The bonding pad is divided into three sections, allowing more pads to be placed on a high resolution panel without reducing the overall bonding width. The three sections have different areas to prevent misalignment during the bonding process between the FPC and panel bonding pad. This design ensures the same bonding area for each pad to ensure durability.

Problems solved by technology

The measure of bonding area, however, is actually limited.
But it is ineffective to mass production because machine precision leads to misalignment of the panel bonding pad and FPC bonding pad of probably the to cause abnormal signal transmission.

Method used

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  • Liquid crystal display and manufacturing method for the same
  • Liquid crystal display and manufacturing method for the same
  • Liquid crystal display and manufacturing method for the same

Examples

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Embodiment Construction

[0035]Please refer to FIG. 2. FIG. 2 is a local diagram of a LCD 200 according to the present invention. For brevity, FIG. 2 only shows bonding areas of the FPC and LCD panel in the LCD 200.

[0036]As shown in FIG. 2, the LCD panel 200 comprises a plurality of metallic wires 210 and a plurality of panel bonding pads 220 each of which is at an end of each metallic wire 210. The metallic wire 210 serves as a data line or a scan line on an LCD panel which is coupled to pixel (not shown) for transmitting signals from external driving chip to drive pixels. Furthermore, the FPC correspondingly has a plurality of metallic wires 230 as well, and there is a FPC bonding pad 240 at the end of each metallic wire 230.

[0037]The arrangement of the bonding pad of the LCD 200 in the present invention is different. The panel bonding pad 220 / FPC bonding pad 240 is arranged in three sections L1, L2 and L3 (separating by dotted sections). Noted that each panel bonding pad 220 / FPC bonding pad 240 is divide...

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Abstract

The present invention provides a design of a bonding pad of a LCD panel and a flexible printed circuit (FPC). Each bonding pad is divided into three sections. Therefore, more bonding pads can be disposed on a high resolution panel without reducing total bonding width. Furthermore, the bonding pad with three sections, the FPC bonding pad and the panel bonding pad which are coupled with each other have different area so that misalignment is avoided in the process of bonding of the FPC and panel bonding pad. Besides that, a bonding area of each FPC bonding pad and panel bonding pad are substantially the same to assure resistance.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a liquid crystal display (LCD) device, and more particularly, to a LCD device having a design of a bonding pad between a LCD panel and a flexible printed circuit.[0003]2. Description of the Prior Art[0004]Owing to their low-profile, thin, and lightweight features, LCD devices have replaced cathode ray tubes (CRTs) in many applications and becomes the mainstream display devices in recent years. LCD panels are widely used in electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens, notebook screens, etc.[0005]A conventional liquid crystal display (LCD) device comprises a LCD panel and external driving chips. The external driving chips transmit scan or data signals to pixels of the LCD panel to display images via metallic wires on the LCD panel.[0006]The external driving chips and the LCD panel are coupled through a flexible printed cir...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G02F1/1345
CPCG02F1/13452G02F1/13458
Inventor WANG, JINJIECHEN, CHENGHUNG
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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